Abstract: A magnetic field sensor includes built in self-test circuits that allow a self-test of most of, or all of, the circuitry of the magnetic field sensor, including self-test of a magnetic field sensing element used within the magnetic field sensor, while the magnetic field sensor is functioning in normal operation.

Abstract: A motion sensor has a magnetic field sensing element for generating a magnetic field signal and a state processor to identify a plurality of states corresponding to ranges of signal values of the magnetic field signal. The state processor includes a state peak logic module configured to generate states that have a reduced amount of state chatter.

Abstract: A magnetic field sensor includes built in self-test circuits that allow a self-test of most of, or all of, the circuitry of the magnetic field sensor, including self-test of a magnetic field sensing element used within the magnetic field sensor, while the magnetic field sensor is functioning in normal operation.

Abstract: A motion sensor has an output protocol processor configured to provide a validated output signal after a determined time period, wherein the determined time period is extended if a vibration is detected.

Abstract: A magnetic field sensor includes a circular vertical Hall (CVH) sensing element and at least one planar Hall element. The CVH sensing element has contacts arranged over a common implant region in a substrate. In some embodiments, the at least one planar Hall element is formed as a circular planar Hall (CPH) sensing element also having contacts disposed over the common implant region. A CPH sensing element and a method of fabricating the CPH sensing element are separately described.

Abstract: A circuit for detecting object movement includes one or more predetermined threshold detectors, one or more tracking threshold detectors, and an output selector to generate an output signal related to at least one of an output of a predetermined threshold detector or an output of a tracking threshold detector based on a predetermined condition. A method of detecting object movement includes generating: a magnetic field signal proportional to a magnetic field associated with the object, a tracking signal to track peaks of the magnetic field signal, a predetermined threshold output signal responsive to the magnetic field signal and to a predetermined threshold, and a tracking threshold output signal responsive to the magnetic field signal and to the tracking signal, and providing an output signal related to a selected one of the predetermined threshold output signal or the tracking threshold output signal based upon a predetermined condition.

Abstract: A circuit to detect a movement of an object provides a threshold selection module that uses one or more threshold signals identified prior to a present cycle of magnetic field signal in order to establish a threshold signal used for a present cycle of the magnetic field signal. A method associated with the circuit is also described.

Abstract: A motion sensor has an output protocol processor configured to provide a validated output signal after a determined time period, wherein the determined time period is extended if a vibration is detected.

Abstract: A motion sensor has a channel amplitude difference processor configured to adjust gains of two channels to bring a gain of a one channel toward a gain of the other channel when a gain mismatch is detected.

Abstract: A motion sensor has a state processor to identify states associated with a magnetic field signal provided by a magnetic field sensing element. The state processor includes a state peak logic module configured to generate states that have a reduced amount of state chatter.

Abstract: An integrated circuit includes a sensor for providing a sensor output signal and a diagnostic circuit coupled to the sensor for providing a self-diagnostic signal. The self-diagnostic signal comprises the sensor output signal during a first time duration and an inverted sensor output signal during a second different time duration.

Abstract: A magnetic field sensor includes built in self-test circuits that allow a self-test of most of, or all of, the circuitry of the magnetic field sensor, including self-test of a magnetic field sensing element used within the magnetic field sensor, while the magnetic field sensor is functioning in normal operation.

Abstract: A sensor that includes a magnetic flux concentrator is presented. The sensor includes a sensor integrated circuit with a structure that includes a magnetic field sensor to sense a magnetic field generated by an external magnetic flux source comprising a magnetic article. The stricture has a first surface to face the external magnetic flux source and an opposing second surface. The sensor integrated circuit also includes a lead frame connected to the structure and having a base portion with a first base portion surface to support the stricture and an opposing second base portion surface. Also provided in the sensor is a magnetic flux concentrator to concentrate magnetic flux of the magnetic field.

Abstract: Methods and apparatus for a sensor to provide a sensor output, an integrated circuit module formed at least partially on a substrate to receive the sensor output and provide an IC output signal, an output circuit having a voltage input to receive a voltage supply signal via a switch element and a signal input to receive the IC output signal and an output to provide a voltage output signal, and an integrated power storage element coupled to the voltage input of the output circuit to provide power during an interruption of the voltage supply signal, wherein the power storage element includes at least one layer generally parallel to the substrate.

Abstract: An integrated circuit includes a sensor for providing a sensor output signal and a diagnostic circuit coupled to the sensor for providing a self-diagnostic signal. The self-diagnostic signal comprises the sensor output signal during a first time duration and an inverted sensor output signal during a second different time duration.